Looking to pick up a Bogner Ecstacy 101B or something similar. Question is, I hear there were numerous tweaks/updates to this model throughout the years, which years are considered best for this amp, or should I buy new? I plan on living primarily in the red channel, but will occationally use both blue and clean channels. I am looking for some killer hot-rodded plexi tones, both for grinding high gain rhythms and singing leads. The clips on the Bogner website sound like what I want for the most part.. Anyone have any advice??